Mitsubishi Electric fr-e700 series, Instruction Manual

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Monitor display and monitor output signals Parameter
6 - 150
6.11.4 Terminal AM calibration [calibration parameter Pr. 645, C1 (Pr. 901)]
By using the operation panel or parameter unit, you can calibrate terminal AM to full scale deflection.
The above parameters can be set when Pr. 160 "User group read selection" = 0.
The parameter number in parentheses is the one for use with the operation panel (FR-PA02) for the
FR-E500 series or parameter unit (FR-PU04/FR-PU07).
The above parameters allow their settings to be changed during operation in any operation mode
even if "0" (initial value) is set in Pr. 77 "Parameter write selection".
Terminal AM bias calibration
Use Pr. 645 AM "0 V adjustment" to calibrate the bias side output signal from terminal AM. If the meter
needle does not point to 0 when the analog output from terminal AM is 0, add or decrease the Pr. 645
setting to adjust the meter needle points to 0. When changing ±1 in Pr. 645, the analog output chang-
es about ±5 mV. (Analog output will not become lower than about 100 mV even when setting the
Pr. 645 lower.)
Pr. No. Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
645
AM 0 V adjustment 1000 970–1200
Calibrates the scale of the meter when analog output
is 0. 55
56
158
Frequency monitoring
reference
Current monitoring
reference
AM terminal function
selection 6.11.3
6.11.3
6.11.3
C1
(901)
AM terminal calibration — —
Calibrates the scale of the meter connected to
terminal AM.
Fig. 6-75:
Terminal AM bias calibration
I001931E
NOTES
Calibration bias and gain changes when changing the control circuit terminal block. Use Pr. 645
and C1 (Pr. 901) to calibrate again in that case.
If bias calibration (Pr. 645) is performed, make sure to perform gain calibration (C1 (Pr. 901)) too.
Output
signal
Bias calibration of output
signal (Pr. 645)
Terminal AM
output